2001355451 has 2 divisors, whose sum is σ = 2001355452. Its totient is φ = 2001355450.

The previous prime is 2001355441. The next prime is 2001355469. The reversal of 2001355451 is 1545531002.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2001355451 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2001355451.

It is not a weakly prime, because it can be changed into another prime (2001355441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000677725 + 1000677726.

It is an arithmetic number, because the mean of its divisors is an integer number (1000677726).

Almost surely, 2^2001355451 is an apocalyptic number.

2001355451 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001355451 is an equidigital number, since it uses as much as digits as its factorization.

2001355451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 2001355451 is about 44736.5113861150. The cubic root of 2001355451 is about 1260.2056124939.

Adding to 2001355451 its reverse (1545531002), we get a palindrome (3546886453).

The spelling of 2001355451 in words is "two billion, one million, three hundred fifty-five thousand, four hundred fifty-one".